When Daffodils Become Daffo-Dead

 Questions about underperforming daffodils abounded in the last week. Most of those queries began, "Why aren't my daffodils blooming this year?" Unlike the bulb itself, this question is a long-lasting perennial, guaranteed to pop up in late February and early March.

 

 

 

Many times, daffodils won't flower if they were cut down prematurely the previous spring. Always wait until the leaves turn completely yellow before removing the leaves. This is about six weeks after flowering.  If it doesn't rain, make sure those daffodils still get irrigation until the leaves are yellow. The good news: you can leave those daffodils in the ground year round.

   

Those non-performing daffodils may be just too darn crowded and are not getting enough food and water. If it is part of a large clump of daffodils that have ceased to bloom, it's time to separate them. 

When the foliage turns brown, dig and separate the bulbs. Replant them immediately, six inches apart and about six inches deep. Or, you can dry the bulbs in the shade, store them in mesh bags, and replant the bulbs in the Fall.

The American Daffodil Society also offers these other tips on why daffodils cease to bloom:

• Bulbs have not been fed in a couple of years. Broadcast a 5-10-10 fertilizer when leaves emerge, and again at bloom is a reasonable feeding schedule. 

(I prefer to feed blooming annuals, perennials and bulbs with a lower dosage organic fertilizer, such as this 3-7-4 formulation).

 

• Feeding has been with a high-nitrogen fertilizer. This encourages production of leaves, but seems to quell the plant's need for flowers.

• Bulbs are planted in a shady area. Daffodils need a half-day of sun at least to produce flowers.

• Bulbs are in competition for food with other plants. Planting under evergreen trees or with other fast-growing plants limits the food they can get. Result: weak plants and no flowers.

• Daffodils love water but must have good drainage. They do not do well where the water puddles, increasing their susceptibility to basal rot fungus. A stem cross-section that looks like this picture may be basal rot. A healthy stem is white. Basal rot is incurable; dig and discard the bulbs.

• Bulbs may be stressed from transplanting. Some varieties seem to skip a year of blooming if dug and replanted in a different environment.

• Some varieties bought from a grower in one climate may have a difficult period of adjustment to a vastly different climate. They may bloom the first year off the previous year's bulb, but then be unable to adequately build a flower for the following year.

• The bulbs may have a virus. Over time, an infected plant loses its vigor, puts up smaller, weakened leaves and stems, stops blooming, and finally dies. Dig and throw away the bulbs.

• Growing conditions the previous spring may have been inhospitable and the reformation of the bulb was affected. An early heat wave may have shut down bulb rebuilding before it was complete. The bulbs may have be grown in a smallish pot without adequate feeding or protection from heat and cold.

• Never buy or plant a "soft" bulb. Retail bulbs typically remain in closed crates for a lengthy period of time during shipping. These humid conditions are near-perfect for the proliferation of fungus diseases such as basal rot or fusarium.

WTF? A Freeze in February? In California? Along the Coast?

 Areas of Northern and Central California, including the coast, may see record breaking low temperatures Friday through Sunday. If your local weather forecast is calling for morning lows below 32 degrees, here's a last minute checklist:


 • If it hasn't rained, water plants thoroughly, especially container plants.
 
• If possible, move sensitive container plants next to a south or west facing wall.
 
• Cover citrus and other sensitive plants with burlap, row cover fabric or sheets (be sure to keep the sheets dry). Tent plastic sheets over the plants; don't let plastic touch plant leaves. A light bulb placed in such a plant can offer a few degrees of protection.
 
• If using an anti-transpirant polymer coating material such as Wilt-Pruf or Cloud Cover, apply at the warmest time of the day, or at least six hours before an expected frost. However, research conducted at Washington State University concluded that these products may actually be detrimental to certain plants during a freeze. If using these products, thoroughly water the soil around the plant before applying.
 
• Disconnect hoses and drip lines, removing end caps. Lay out straight.
 
• To prevent broken grass blades, don't walk on a frozen lawn.
 
• Remove the lowest sprinkler head to drain.
 
• Cover unprotected faucets and pipes, including any spa or pool equipment.
 
• If temperatures are predicted to fall to the low 20's: prevent frozen attic pipes. Let lukewarm water trickle out of the indoor faucet farthest from the inlet. Also, let faucets with pipes running along an outer, north facing wall trickle during the night. 

• Ideally, add insulation to attic water pipes.
 
• Open cabinet doors to get more heat to the pipes. Close the garage door if water pipes pass through the garage.
 
• Setting your thermostat nightly at 55 can add needed heat to the attic pipes.
 
• If leaving the house for a vacation during an expected freeze, turn off the water to the house, and open up the faucet farthest from the inlet. Be sure to turn off your water heater.
 
• To prevent cracking tile, run your pool and spa equipment during the freezing hours.

• Don't forget about your pets during a prolonged freeze. Bring them indoors at night. Move or replace their drinking water. Break up any frozen water in bird baths.